Bowl drive for food mixers



July 13, 1954 w WEEKS 2,683,593

BOWL DRIVE FOR FOOD MIXERS Filed Nov. 25, 1951 Fig. l.

Inventor: Walter RWeeks, by %%..-AM A His Attorney.

Patented July 13, 1954 UNHTED STATES PATENT OFFICE BOWL DRIVE FOR FOOD MIXERS Walter R. Weeks, Hamden, Conn, assignor to General Electric Company, a corporation of New York Application November 23, 1951, Serial No. 257,707

'2 Claims. (01. 25984) 1 2 The present invention relates to food mixers ing the stud I provide a lever l2 which at its and has to do particularly with an improved inner end is fixed to the lower end of the stud construction and arrangement for effecting roby suitable means such as the lock nuts 13. The tation of a mixing bowl being used in connection other end of lever I2 projects beyond the conwith the food mixer. 5 fines of base 5 and is provided with an upturned According to my invention 1 provide one or end M to form a handle. By moving lever l2, more of the heaters with one or more driving stud 9 may be turned relatively to base 5 to verprotuberances on their bottoms and I then mount tically adjust it. The handle may have an arc the rotatable bowl pan of the mixer in a manner of movement as indicated in Fig. 3 by the marksuch that it can be elevated to bring the bottom 10 ings Free and Drive. The lock nuts [3 may of a bowl positioned on it up into engagement be used for initial factory adjustment of pivot with the protuberances to effect driving of the stud 9 with respect to base 5. bowl. The beaters 8a comprise stems l5 and beater For a consideration of what I believe to be loops [6 and on the bottoms of the loops of one novel and my invention, attention is directed or more of the heaters there are provided downto the following specification and to the claims wardly projecting protuberances ll having niceappended thereto. ly rounded bottoms. The beaters shown each In the drawing, Fig. 1 is a side view, partly in have two beater loops l6 formed from fiat strip section and partly broken away of a food mixer stock arranged at right angles to each other and embodying the invention; Fig. 2 is a detail secthere are four protuberances ll spaced as shown tional View on an enlarged scale taken on line n Fig- I the d w y the right hand 2 2, Fig. 1, and Fig. 3 is a sectional view taken beater, the one nearest the edge of the bowl, is on line 33, Fig. 1. provided with protuberances I! this being the Referring to the drawing, 1 indicates the eleat r whi h i p m ri y ff tiv i driv n the trio motor driven power unit of the mixer, the 23 bowl, being farthest from the center. Howcontrol knob being indicated at 2. It is pivever, 1 three beaters y be Provided W otally mounted at 3 on a post or arm 4 which in protuberances thus making the beaters interturn is supported by a base 5 having feet 6 on b e. which it rests. The base is positioned under the In Fig. 1 the bowl pan is shown as having been power unit as shown in Fig. 1 and is provided elevated to bring the bottom of bowl 8 up into with a bowl pan 7 adapted to support a mixing driving engagement with protuberances I! so bowl 8. Projecting downwardly from the power that when the beaters rotate the protuberances unit and suitably detachably connected with it will cause the bowl and bowl pan to rotate, pivto be driven thereby are a plurality of beaters ot pin ll turning in socket ii}. In the drawing 8a, three being shown in the present instance. the bowl bottom is shown as curving upwardly The structure so far described is a known one. ewhat at e S d S0 t a at y instant 5 t is shown by way of example and i t be t k the outermost protuberance I! is in driving enas typical of any suitable food mixer structure. e s m nt with the bowl bottom.

My invention has to do with an improved r- In normal use the bowl pan will be in lowered rangement for efiecting rotation of the bowl pan pesiiien, lever l2 being in the p on ked with a bowl thereon through the intermediary Free. The bowl with the material therein is of the beaters. placed on the bowl pan after which the power According to the embodiment of my invention unit (which has been tilted back on its pivot, which I have illustrated, I provide a vertically as is well understood, to permit o placing the adjustable pivot stud El in base 5 provided with bowl on the pan), is tilted forward to bring the a socket it and I provide bowl pan 1 with a pivot beaters down into the bowl. Then either before pin ll positioned in the socket and adapted to or after the motor is started to run the beaters, turn therein. The pin is at the center of pan lever i2 is turned to raise the bowl pan to bring Ti and has a rounded lower end which rests on the bottom of the bowl into driving engagement the bottom of the socket and turns on it as a with the protuberances. The threads on stud 9 hearing. The pin forms the sole support for have a pitch or slope of a value to effect the depan i. For vertically adjusting the stud in base sired amount of vertical adjustment of the stud 5 I provide preferably a threaded connection of when the lever i2 is turned from its one extreme relatively high or steep pitch between the stud p tion to the Other.

and base as shown clearly in Fig. 1 and for turn- The construction has the advantages that it is simple in structure, that the parts of the drive which come in contact with the materials being mixed, 1. e. the protuberances, are easily cleaned, and that the drive adapts itself readily to differences in bowl wall thicknesses since the bowl can be elevated just enough to bring its bottom into engagement with the protuberances.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. In an electric food mixer, a base, a bowl pan, means including a member carried by the base and vertically adjustable with respect thereto on which the bowl pan is rotatably mounted, a power unit on the base, rotatable beaters carried and driven by the power unit which project down toward the base, at least one of said boaters having a downwardly directed protuberance on its bottom, and manual means connected to said member and projecting to a. position beyond the base for adjusting said member vertically with respect to the base while said boaters are rotating to move said bowl pan between a first position in which a bowl positioned on said bowl pan is brought into engagement with said protuberance to cause said beater to rotate the bowl and bowl pan and a second position in which the bowl is positioned out of engagement with said protuberance.

2. In an electric food mixer, a base, a stud having an upwardly facing socket, means supporting the stud in the base for vertical adjustment with respect to the base, a bowl pan having a pivot pin positioned in said socket for rotatably mounting the bowl pan on the base, a power unit carried by the base, rotatable heaters carried and driven by the power unit which project down toward the base, at least'one of said boaters having a downwardly projecting protuberance on its bottom, and manual means connected to said stud and projecting to a position beyond the base for adjusting said stud vertically with respect to the base while said heaters are rotating to move said bowl pan between a first position in which a bowl positioned on said bowl pan is brought into engagement with said protuberance to cause said beater to rotate the bowl and bowl pan and a second position in which the bowl is positioned out of engagement with said protuberance.

3. In an electric food mixer, a base, a stud having an upwardly facing socket, means supporting the stud in the base for vertical adjustment with respect to the base, a bowl panhaving a pivot pin positioned in said socket for rotatably mounting the bowl pan on the base, a power unit carried by the base, rotatable heaters carried and driven by the power unit which project down toward the base, at least one of said beaters having a plurality of spaced apart downwardly projecting protuberances on its bottom, and manual means connected to said stud and projecting to a position outside the base for adjusting said stud vertically with respect to the base while said heaters are rotating to move said bowl pan between a first position in which a bowl positioned on said bowl pan is brought into engagement with said protuberance to cause said heater to rotate the bowl and bowl pan and a second position in which the bowl is positioned out of engag ment with said protuberance.

4. In an electric food mixer, a base having a threaded opening, a stud threaded into said opening having an upwardly facing socket, a bowl pan having a pivot pin positioned in said socket for rotatably mounting the pan on the base, a

power unit carried by the base, rotatable boaters carried and driven by the power unit which project down toward the base, downwardly projecting protuberance means on the bottom of at least one of said beaters, and a lever connected to said stud for turning it to effect upward adjustment of the stud with respect to the base while said beaters are rotating to move said bowl pan between a first position in which a bowl positioned on said bowl pan is brought into engagement with said protuberance to cause said beater to rotate the bowl and bowl pan and a second position in which the bow1 is positioned out of engagement with said protuberance.

5. In an electric food mixer, a base, a bowl pan, means including a member carried by the base and vertically adjustable with respect thereto on which the bowl pan is rotatably mounted, a power unit on the base, rotatable beaters carried and driven by the power unit which project down toward the base, said beaters comprising loops formed from fiat strips which cross at their lower ends, the bottoms of the strips of at least one beater being formed to provide downwardly projecting protuberance means, and manual means connected to said member and projecting to a position beyond said base for adjusting said member vertically with respect to the base while said heaters are rotating to move said bowl pan between a first position in which a bowl positioned on said bow1 pan is brought into engagement with said protuberance to cause said beater to rotate the bowl and bowl pan and a second position in which the bowl is positioned out of engagement with said protuberance.

6. In an electric food mixer, a base, a bowl pan, a bowl adapted to be supported on said bowl pan and having a bottom curved upwardly adjacent the side wail of the bowl, means including a member carried by the base and vertically adjustable with respect thereto on which the bowl pan is rotatably mounted, a power unit on the base, rotatable beaters carried and driven by the power unit which project down toward the base, at least one of said heaters havig at least one downwardly projecting protuberance on its bottom, said protuberance being displaced laterally from the axis of rotation of said heater, and manual means connected to said member and projecting to a position beyond the base for adjusting said member vertically with respect to the base while said heaters are rotating to move said member between the first position in which said protuberance in its outermost position engages the upwardly curving portion of the bottom of the bowl to cause said beater to rotate the bowl and bowl pan and a second position in which the bowl is positioned out of engagement with said protuberance.

7. In an electric food mixer, a base, a bowl pan, a bowl adapted to be supported on said bowl pan and having a bottom curved upwardly adjacent the side wall of the bowl, means including a member carried by the base and vertically adjustable with respect thereto on which the bowl pan is rotatably mounted, a power unit on the base, rotatable heaters carried and driven by the power unit which project down toward the base, at least one of said heaters having a plurality of spaced downwardly projecting protuberances on its bottom, said protuberances being displaced laterally from the axis of rotation of said beater, and manual means connected to said member and projecting to a position beyond the .base for adjusting said member vertically 5 6 with respect to the base while said heaters are References Cited in the file of this patent rotating to move said member between the first UNITED STATES PATENTS position in which each of said protuberances in its outermost position successively engages the Number Name Date upwardly curving portion of the bottom of the 5 2,038,255 Wnght 211 1936 bowl to cause said heater to rotate the bowl and 2,065,506 ROSS 2, 1937 bowl pan and a second position in which the bowl 2,192,343 Bean 1940 is positioned out of engagement with said pro- 2,235,816 Jordan June 1942 tuberances. 

